An indirect amplification method for the determination of trace13; amounts of germanium

Kannan, R and Rajagopalan, SR (1988) An indirect amplification method for the determination of trace13; amounts of germanium. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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Abstract

A highly sensitive polarographic method has been developed13; for the determination of trace amounts of germanium by combining two different chemical amplification methods in tandem. In this method germanium is treated with ammonium molybdate to form molybdogermanic acid (MGA) complex, the complex isolated by extraction with a mixture of diethyl ether and 1-pentanol and the molybdenum content of the complex determined by catalytic polarography. Conversion of germanium to MGA complex enhances the sensitivity since 1 atom of germanium reacts with 12 atoms of molybdenum to form the complex. The catalytic wave enhances the sensitivity by a factor of 40. By combining these two methods of amplification a dramatic improvement in overall sensitivity is achieved. Separation methods have been proposed for the isolation of germanium from interfering elements so that the developed method can be used for the analysis of technical materials.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: Germanium analysis;Polarographic analysis;Chemical amplification;Trace analysis.
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Users 90 not found.
Date Deposited: 09 Nov 2006
Last Modified: 24 May 2010 04:22
URI: http://nal-ir.nal.res.in/id/eprint/3228

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